JP2016043813A - Vehicle seat device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat device which restrains an upper body of an occupant achieving good balance between left and right sides and enables improvement of a restraining force.SOLUTION: A seat device 1 includes: a seat body 2; at least a pair of air bag modules 3 which are provided at left and right side parts of the seat body 2 so as to make a left and right pair; and movable parts 4 which are movable relative to the seat body 2 and support the air bag modules 3. Each air bag module 3 is moved between a first position P1 where the air bag module 3 is arranged along a side part of the seat body 2 and a second position P2 which is located at the front side relative to a front surface of the seat bag 11 by movement of the movable part 4. An air bag 15 expanded from the air bag module 3 located in the second position P2 sandwiches an occupant H seated on the seat body 2 with the seat back 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle seat device.

  In a vehicle such as an automobile, a three-point seat belt that is fixed at three points on either the left or right side of the occupant's waist and the left or right side of the shoulder is widely used as a restraint for restraining the occupant's body to the seat. There are also known four-point and five-point seat belts in which the fixed points are increased and the binding force is increased.

  Further, the vehicle seat described in the following Patent Document 1 includes two belts arranged vertically on both sides of the seat back, and a belt hooking mechanism that swings each belt forward at the upper end of the seat back. . When a vehicle collision is detected or predicted, each belt is swung out in front of the occupant by the belt hooking mechanism, and is laid around the occupant from the shoulder to the waist.

JP 2007-15541 A

  In the three-point seat belt, the upper body of the occupant is restrained by a belt that crosses the chest diagonally from either the left or right shoulder to the waist. May fall out of the belt. A four-point or five-point seat belt in which the fixing points are increased and the binding force is increased takes time and effort.

  In the vehicle seat described in Patent Document 1, two belts are automatically hung around the occupant from the shoulders to the waists in a substantially bilaterally symmetrical manner, but the width of the belt is generally about several centimeters and The contact area of the seat back is limited, and the distance between both belts is widened from the upper end to the lower end of the seat back.For example, depending on the occupant's physique, the seat height is low or the shoulder width is narrow. There is a risk of lack of restraint.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a vehicle seat device capable of restraining an occupant's upper body with a good left-right balance and increasing the restraining force.

  A vehicle seat device according to an aspect of the present invention includes a seat body having a seat cushion and a seat back, at least a pair of airbag modules provided in left and right sides on the left and right sides of the seat body, and the airbag. A movable portion that supports the module and is movable with respect to the seat body. The airbag module is configured to move the movable portion to a first position along a side portion of the seat body and the seat back. The airbag that is moved between the second position in front of the front surface and deployed from the airbag module in the second position sandwiches an occupant seated in the seat body with the seat back.

  ADVANTAGE OF THE INVENTION According to this invention, the passenger | crew's upper body can be restrained with sufficient left-right balance, and the vehicle seat apparatus which can raise restraint force can be provided.

It is a figure showing composition of an example of a vehicular seat device for explaining an embodiment of the present invention. It is a figure which shows the II-II line cross section in FIG. It is a figure which shows the state by which the functional block of an example of the airbag operating system mounted in a vehicle and the airbag of the vehicle seat apparatus of FIG. 1 were expand | deployed. It is a figure which shows the functional block of the vehicle seat apparatus of FIG. It is a figure which shows the structure of the modification of the vehicle seat apparatus of FIG. It is a figure which shows the structure of the other modification of the vehicle seat apparatus of FIG. It is a figure explaining an example of the method of detecting a crew member's physique. It is a figure explaining the other example of the method of detecting a passenger | crew's physique. It is a figure which shows the functional block of the other example of the vehicle seat apparatus for demonstrating embodiment of this invention. It is a figure which shows the operation | movement flow of the vehicle seat apparatus of FIG. It is a figure which shows the operation | movement flow of the modification of the vehicle seat apparatus of FIG. It is a figure which shows the functional block of the other example of the vehicle seat apparatus for demonstrating embodiment of this invention. It is a figure which shows the operation | movement flow of the vehicle seat apparatus of FIG. It is a figure which shows the operation | movement flow of the modification of the vehicle seat apparatus of FIG. It is a figure which shows the structure of the other example of the vehicle seat apparatus for demonstrating embodiment of this invention. It is a figure which shows the structure of the other example of the vehicle seat apparatus for demonstrating embodiment of this invention. It is a figure which shows the structure of the other example of the vehicle seat apparatus for demonstrating embodiment of this invention. It is a figure which shows the structure of the other example of the vehicle seat apparatus for demonstrating embodiment of this invention.

  1 and 2 show an example of a configuration of a vehicle seat device for explaining an embodiment of the present invention.

  A vehicle seat device 1 shown in FIG. 1 includes a seat body 2, an airbag module 3, and a movable portion 4 that supports the airbag module 3.

  The seat body 2 includes a seat cushion 10 that constitutes a seat surface portion and a seat back 11 that constitutes a backrest portion, and in the illustrated example, supports the head and neck of an occupant seated on the seat body 2. A headrest 12 is provided on the upper portion of the seat back 11.

  The airbag module 3 is provided as a pair on the left and right sides of the seat body 2, and in the illustrated example, a pair is provided on the left and right sides on the upper side of the seat back 11 (headrest 12 side). A pair is provided on the left and right side portions on the lower side (seat cushion 10 side) of the seat back 11.

  In the illustrated example, the movable portion 4 is provided for each airbag module 3. Like the airbag module 3, a pair of movable portions 4 are provided on the left and right side portions on the upper side of the seat back 11. A pair is provided on the left and right sides.

  The movable portion 4 has an arm shape, and the base end portion 4a of the movable portion 4 is supported by a frame of the seat back 11 (not shown) so as to be rotatable around a rotation shaft 13 extending in the left-right direction of the seat back 11. . The airbag module 3 is built in the distal end portion 4 b of the movable portion 4, and the first position P <b> 1 along the side portion of the seat body 2 and the front of the seat back 11 are moved forward by the rotational movement of the movable portion 4. It is moved between two positions P2.

  The airbag module 3 includes an airbag 15 and an inflator 16 that generates a gas for deploying the airbag 15, and the inflator 16 is ignited by, for example, an airbag operating system mounted on a vehicle. .

  FIG. 3 shows an example of the configuration of the airbag operating system.

  The airbag operating system is provided at an appropriate location such as a front part or a side part of a vehicle, detects an impact acting on the vehicle, and detects a vehicle collision based on the impact detected by the impact sensor 20. And an electronic control unit (ECU) 21 for detection.

  When the ECU 21 detects a vehicle collision, the ECU 21 sends an ignition signal for igniting the inflator 16 (see FIG. 2) of the airbag module 3 to the airbag module 3. In the airbag module 3, the inflator 16 is ignited based on the ignition signal, and thereby the airbag 15 is deployed.

  The inflator 16 is ignited and the airbag 15 is deployed only when the airbag module 3 is in the second position P2 ahead of the front surface of the seat back 11. For example, the movement of the movable part 4 that supports the airbag module 3 is detected by an appropriate sensor, and the ECU 21 controls the sending of an ignition signal to each airbag module 3 based on the detected position of the movable part 4. That's fine.

  The impact sensor may be provided integrally with the airbag module 3 in some cases. In that case, the inflator 16 is directly ignited based on the output signal of the sensor in the airbag module 3 without going through the ECU 21 of the vehicle.

  The airbag 15 of the airbag module 3 disposed at the second position P2 is deployed on the passenger front side. The deployed airbag 15 holds the upper body of the occupant H seated on the seat body 2 between the seat back 11 and restrains it.

  In the illustrated example, both shoulder portions of the occupant H are restrained by the airbag 15 of the pair of airbag modules 3 provided on the upper side of the seat back 11. Further, the waist of the occupant H is restrained by the airbag 15 of the pair of airbag modules 3 provided below the seat back 11.

  Since the airbag module 3 is provided in a pair of left and right sides on the left and right sides of the seat body 2, the upper body of the occupant H can be restrained with a good left-right balance. And according to the airbag 15, since the contact area with the passenger | crew H can be enlarged compared with a general seatbelt, and it expand | deploys with gas, the physique difference of the passenger | crew H can be absorbed. Thereby, the restraining force of the occupant H can be increased.

  Preferably, a plurality of pairs of airbag modules 3 are provided on the left and right sides of the seat body 2 in pairs. If a plurality of pairs of airbag modules 3 are provided and a plurality of parts of the occupant H are restrained, the restraining force of the occupant H can be further increased.

  Although the constrained part of the occupant H is not particularly limited, for example, the waist and both shoulders are suitable. By restraining the waist, it is possible to effectively prevent the whole body from rising, and by restraining both shoulders, it is possible to effectively prevent the upper body from falling.

  Moreover, since the movable part 4 is movable with respect to the seat main body 2 and the airbag module 3 and the movable part 4 can be retracted to the side part of the seat main body 2 when not in use, it is difficult to get on and off. In addition, convenience can be improved.

  In addition, the seat apparatus 1 of this example can be used in combination with other airbag modules such as a seat belt and a front airbag module.

  Here, the movable part 4 may be configured to be manually moved by the occupant H, but in the seat device 1 of the present example, the movable part 4 is configured to be moved electrically.

  FIG. 4 shows functional blocks of the sheet apparatus 1.

  The sheet apparatus 1 includes a drive unit 30 and a control unit 31 that controls the drive unit 30. The drive unit 30 includes an actuator, and rotates the movable unit 4 under the control of the control unit 31.

  An operation signal for instructing the rotational movement of the movable unit 4 is input from the operation unit 32 to the control unit 31. The operation unit 32 includes a switch or the like operated by the occupant H, and is provided, for example, on a side portion of the seat body 2 or a door panel of the vehicle.

  The control unit 31 controls the drive unit 30 based on the operation signal. Under the control of the control unit 31, the drive unit 30 places the airbag module 3 at the first position P1 or the second position P2. Thus, the movable part 4 is rotated.

  FIG. 5 shows functional blocks of a modified example of the sheet apparatus 1 described above.

  In the seat device shown in FIG. 5, the movable part 4 is capable of translational movement in the vertical direction along the side part of the seat back 11 in addition to rotational movement around the rotation shaft 13. The distances h1 and h2 from the seat cushion 10 at the second position P2 of the airbag module 3 are adjustable.

  The drive unit 30 rotates and translates the movable unit 4 under the control of the control unit 31.

  An operation signal that instructs translational movement of the movable unit 4 in the vertical direction along the side portion of the seat back 11 is input to the control unit 31 from the operation unit 32. The control unit 31 controls the driving unit 30 based on the operation signal, and the driving unit 30 moves the movable unit so that the distances h1 and h2 from the seat cushion 10 at the second position P2 of the airbag module 3 are adjusted. 4 is translated.

  By making the second position P2 of the airbag module 3 where the airbag 15 is deployed adjustable, a predetermined restrained portion of the occupant H in the seated state of the seat body 2 (in this example, both shoulders of the occupant H) The second position P2 can be adapted to the position of the upper part and the lower part). Thereby, the airbag 15 can be appropriately brought into contact with a predetermined restrained portion of the occupant H regardless of the physique of the occupant H, and the restraining force of the occupant H can be further increased.

  FIG. 6 shows a configuration of another modified example of the sheet apparatus 1 described above.

  In the example shown in FIG. 6, the second position P <b> 2 of the airbag module 3 is automatically adjusted according to the physique of the occupant H seated on the seat body 2.

  The physique information corresponding to the physique of the occupant H seated on the seat body 2 is input from the physique information acquisition unit 33 to the control unit 31. The control unit 31 detects the position of a predetermined constrained part (for example, both shoulders and waist) of the occupant H based on the physique information, and the second position of the airbag module 3 that matches the detected position of the constrained part. P2, that is, distances h1 and h2 from the seat cushion 10 at the second position P2 are set.

  And the control part 31 controls the drive part 30 based on the operation signal input from the operation part 32, and the drive part 30 is the control part 31, and the airbag module 3 is 1st position P1. Alternatively, the movable unit 4 is rotated and translated so as to be arranged at the set second position P2.

<Physique detection>
Below, the method to detect the position of the predetermined | prescribed restrained site | part in the passenger | crew H who seated on the seat main body 2 is demonstrated.

  In the example shown in FIG. 7, the position of a predetermined constrained part is detected based on the load applied to the seat body 2.

  In this example, the physique information acquisition part 33 is comprised by the load sensor 34, and the load sensor 34 was provided between the seat main body 2 and the vehicle, and respond | corresponded to the load loaded on the seat main body 2 as physique information. Output a signal.

  The control unit 31 detects the load applied to the seat body 2, that is, the weight of the occupant H, based on the output signal of the load sensor 34. The physique of the occupant H and the weight of the occupant H are related to each other, and the control unit 31 holds in advance data obtained by correlating the position of a predetermined restricted site as the physique and the weight. And the control part 31 detects the position of the to-be-restricted site | part corresponding to the detected weight with reference to this data.

  In the above example, the position of the predetermined restraint site is indirectly detected from the body weight, but the load sensor is provided in a distributed manner on the surface layer portion of the front surface of the seat back 11, and the load applied to the seat back 11 The position of a predetermined constrained part may be detected directly from the distribution of

  The example shown in FIG. 8 detects the position of a predetermined constrained part based on a moving image obtained by imaging the interior of the vehicle.

  In this example, the physique information acquisition part 33 is comprised by the imaging device 35, and the imaging device 35 is provided in the appropriate location of a vehicle, and acquires the image in the vehicle interior of the range containing the seat main body 2. FIG.

  The control unit 31 performs image analysis such as contour detection on the image acquired by the imaging device 35, and a predetermined part (for example, the head) of the occupant H and a predetermined part (for example, the headrest 12 of the headrest 12). The positional relationship Y with respect to the upper end) is detected. The physique of the occupant H is related to the positional relationship Y, and the control unit 31 stores in advance data obtained by correlating the position of the predetermined restrained part as the physique with the positional relationship Y. Yes. And the control part 31 detects the position of the predetermined | prescribed restraint site | part corresponding to said detected positional relationship Y with reference to this data.

  The physique of the occupant H and the size X of a predetermined part (for example, the head) are also related, and data obtained by correlating the position of the predetermined constrained part and the size X of the predetermined part is used for image analysis. The position of a predetermined constrained part may be detected from the size X of the predetermined part obtained.

  Further, when detecting the positional relationship between the head of the occupant H and the seat body 2 or a predetermined location in the vehicle compartment, a human sensor using infrared rays, ultrasonic waves, light, or the like is used instead of the imaging device 35. It is possible to detect the positional relationship between the head of the occupant H and the seat body 2 or a predetermined location in the vehicle interior based on the sensor installation location.

  As described above, the position of the predetermined restrained portion in the occupant H seated on the seat body 2 is detected, and the second position P2 of the airbag module 3 is automatically adjusted according to the detected position of the predetermined restrained portion. By doing so, convenience can be improved.

  FIG. 9 shows functional blocks of another example of a vehicle seat device for explaining an embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the element which is common in the sheet | seat apparatus 1 mentioned above, and description is abbreviate | omitted or simplified.

  In the vehicle seat device 101 shown in FIG. 9, the movable part 4 is automatically rotated and moved in accordance with the seating of the occupant H on the seat body 2, whereby the airbag 15 can be deployed to the second position P <b> 2 where the airbag 15 can be deployed. The bag module 3 is configured to be automatically moved.

  The sheet apparatus 101 includes a drive unit 130 and a control unit 131 that controls the drive unit 130. The drive unit 130 includes an actuator, and rotates and moves the movable unit 4 under the control of the control unit 131.

  Seating information corresponding to the seating status of the occupant H in the seat body 2 is input from the seating information acquisition unit 132 to the control unit 131. The control unit 131 detects the seating of the occupant H on the seat body 2 based on the seating information, and when the seating of the occupant H on the seat body 2 is detected, the airbag module 3 is disposed at the second position P2. Thus, the drive unit 130 that rotates and moves the movable unit 4 is controlled.

  FIG. 10 shows an operation flow until the occupant H is seated on the seat body 2 and the airbag 15 of the airbag module 3 is deployed in the vehicle seat device 101 configured as described above.

  First, the control unit 131 detects the seating of the passenger H on the seat body 2 based on the seating information input from the seating information acquisition unit 132 (step S1). The control unit 131 that detects the seating controls the drive unit 130, and the drive unit 130 moves the movable unit 4 so that the airbag module 3 is disposed at the second position P2 under the control of the control unit 131. (Step S2).

  When a collision of the vehicle is detected by the ECU 21 (see FIG. 3) of the airbag operating system (step S3), the ECU 21 determines whether the airbag 15 can be deployed (step S4). In the present example, since the airbag module 3 is disposed at the second position P2 where the airbag 15 can be deployed in step S2, the airbag 15 is deployed after a determination is made (step S5).

<Sitting detection>
Hereinafter, a method for detecting the seating of the passenger H on the seat body 2 will be described.

  The seat body 2 is loaded with the weight of the occupant H, and the load applied to the seat body 2 changes with the seating and leaving. Therefore, the seating of the occupant H on the seat body 2 can be detected based on the load applied to the seat body 2. For example, referring to FIG. 7, the seating information acquisition unit 132 is configured by the load sensor 34, and the control unit 131 detects the load applied to the seat body 2 based on the output signal of the load sensor 34 and is seated. Can be detected.

  Further, the seating of the occupant H on the seat body 2 can be detected based on a moving image obtained by imaging the vehicle interior. For example, referring to FIG. 8, the seating information acquisition unit 132 is configured by the imaging device 35, and the control unit 131 performs image analysis such as contour detection on the moving image acquired by the imaging device 35, and H can be recognized and seated can be detected.

  Note that the method of detecting the seating is not limited to the above example. For example, seating can be detected using a human sensor using infrared rays, ultrasonic waves, light, or the like. In addition, when the vehicle seat device 101 is used in combination with a seat belt, it is also possible to detect the seating based on the wearing state of the seat belt.

  In this way, by detecting the seating of the occupant H on the seat body 2 and automatically rotating the movable part 4, thereby moving the airbag module 3 from the first position P1 to the second position P2, Since the airbag module 3 does not become a hindrance when getting on and off and the airbag module 3 is securely disposed at the second position P2 where the airbag 15 can be deployed after the user has sat down, the convenience can be improved.

  Further, in the vehicle seat device 101, the second position P2 of the airbag module 3 can be adjusted in the same manner as the vehicle seat device shown in FIG. 5, and the vehicle shown in FIG. Similarly to the seat apparatus for a vehicle, the second position P2 of the airbag module 3 can be automatically adjusted according to the physique of the occupant H seated on the seat body 2.

  FIG. 11 shows the occupant H in the seat body 2 when the second position P2 of the airbag module 3 is automatically adjusted according to the physique of the occupant H in the vehicle seat device 101 described above. Shows an operation flow from when the user is seated until the airbag 15 of the airbag module 3 is deployed.

  First, the control unit 131 detects the seating of the passenger H on the seat body 2 (step S11).

  The control unit 131 that has detected the seating of the occupant H on the seat body 2 acquires the physique information of the occupant H seated on the seat body 2 (step S12).

  Next, the control unit 131 detects the position of a predetermined constrained part in the occupant H based on the physique information, and sets the second position P2 of the airbag module 3 that matches the detected position of the constrained part. (Step S13).

  Then, the control unit 131 controls the drive unit 130, and the drive unit 130 controls the movable unit 4 so that the airbag module 3 is moved to the set second position P2 under the control of the control unit 131. Rotation and translation are performed (step S14).

  When a collision of the vehicle is detected by the ECU 21 (see FIG. 3) of the airbag operating system (step S15), the ECU 21 determines whether the airbag 15 can be deployed (step S16). In this example, since the airbag module 3 is disposed at the second position P2 where the airbag 15 can be deployed in step S14, the airbag 15 is deployed after a determination is made (step S17).

  FIG. 12 shows functional blocks of another example of a vehicle seat device for explaining an embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the element which is common in the vehicle seat apparatus 1 mentioned above, and description is abbreviate | omitted or simplified.

  In the vehicle seat device 201 shown in FIG. 12, when a vehicle collision is predicted by a collision prediction system mounted on the vehicle, the movable portion 4 is automatically rotated, whereby the airbag 15 is deployed. The airbag module 3 is automatically arranged at a possible second position P2.

  The collision prediction system includes a distance measuring sensor 22 that measures a distance from another vehicle, an obstacle, and the like, and a speed sensor 23 that detects a vehicle speed, and is integrated into the airbag operating system (see FIG. 3). Yes.

  Based on the distance measured by the distance measuring sensor 22 and the vehicle speed detected by the speed sensor 23, the ECU 21 detects, for example, excessive approach to other vehicles or obstacles, or sudden deceleration of the vehicle due to a brake operation. A vehicle collision is predicted and it is detected that the collision has been avoided.

  Then, the ECU 21 outputs a mode switching signal instructing the transition to the collision preparation mode when the collision is predicted, and instructing the cancellation of the collision preparation mode when it is detected that the collision is avoided.

  The vehicle seat device 201 includes a drive unit 230 and a control unit 231 that controls the drive unit 230. The drive unit 230 includes an actuator, and rotates the movable unit 4 under the control of the control unit 231.

  A mode switching signal is input from the ECU 21 to the control unit 231. In response to the mode switching signal that instructs the transition to the collision preparation mode, the control unit 231 uses the mode switching signal that instructs the release of the collision preparation mode so that the airbag module 3 is disposed at the second position P2. On the other hand, the drive unit 230 that rotates and moves the movable unit 4 is controlled so that the airbag module 3 is disposed at the first position P1.

  FIG. 13 shows an operation flow until the occupant H is seated on the seat body 2 and the airbag 15 of the airbag module 3 is deployed in the vehicle seat device 201 configured as described above.

  First, the control unit 231 detects the seating of the passenger H on the seat body 2 (step S21). The seating detection by the control unit 231 can be performed in the same manner as the seating detection by the control unit 131 of the vehicle seat device 101 shown in FIG. This is to prevent unnecessary operations such as movement and deployment of the airbag 15.

  Next, when a collision is predicted by the ECU 21 of the above-described collision prediction system (step S22), a mode switching signal for instructing the transition to the collision preparation mode is output from the ECU 21 (step S23).

  The control unit 231 to which the mode switching signal for instructing the transition to the collision preparation mode is input controls the drive unit 230, and the drive unit 230 controls the airbag module 3 to the second position P2 under the control of the control unit 231. The movable part 4 is moved so as to be disposed at (step S24).

  Next, the ECU 21 determines collision avoidance (step S25).

  When the ECU 21 detects that the collision has been avoided, the ECU 21 outputs a mode switching signal that instructs the cancellation of the collision preparation mode, and receives a mode switching signal that instructs the cancellation of the collision preparation mode. The unit 231 controls the drive unit 230, and the drive unit 230 moves the movable unit 4 so that the airbag module 3 is disposed at the first position P1 under the control of the control unit 231 (step S26).

  On the other hand, when it is not detected by the ECU 21 that the collision has been avoided, the airbag module 3 is maintained at the second position P2 (step S27), and then the collision is determined by the ECU 21 of the above-described collision detection system. (Step S28).

  When the ECU 21 detects a vehicle collision, the ECU 21 determines whether or not the airbag 15 can be deployed (step S29). In the present example, since the airbag module 3 is disposed at the second position P2 where the airbag 15 can be deployed in steps S24 and S27, the airbag 15 is deployed after a pass / fail determination (step S30). ).

  In this way, the movable part 4 is automatically rotated and moved in anticipation of a vehicle collision, thereby moving the airbag module 3 from the first position P1 to the second position P2. Protection can be achieved.

  In the vehicle seat device 201, the second position P2 of the airbag module 3 can be adjusted in the same manner as the vehicle seat device shown in FIG. 5, and the vehicle shown in FIG. Similarly to the seat apparatus for a vehicle, the second position P2 of the airbag module 3 can be automatically adjusted according to the physique of the occupant H seated on the seat body 2.

  FIG. 14 shows that in the vehicle seat device 201 described above, the occupant H is attached to the seat body 2 when the second position P2 of the airbag module 3 is automatically adjusted according to the physique of the occupant H. Shows an operation flow from when the user is seated until the airbag 15 of the airbag module 3 is deployed.

  First, the control unit 231 detects the seating of the occupant H on the seat body 2 (step S31).

  The control unit 231 that detects the seating of the occupant H on the seat body 2 acquires the physique information of the occupant H seated on the seat body 2 (step S32).

  The control part 231 which acquired the physique information of the passenger | crew H detects the position of the predetermined | prescribed restraint site | part in the passenger | crew H based on the physique information, and the 2nd position of the airbag module 3 adapted to the position of the detected restraint site | part P2 is set (step S33).

  Next, when a collision is predicted by the ECU 21 of the collision prediction system (step S34), a mode switching signal for instructing a shift to the collision preparation mode is output from the ECU 21 (step S35).

  The control unit 231 to which the mode switching signal for instructing the transition to the collision preparation mode is input controls the driving unit 230, and the driving unit 230 controls the first module in which the airbag module 3 is set under the control of the control unit 231. The movable part 4 is moved so as to be arranged at the second position P2 (step S36).

  Next, the ECU 21 determines that collision is avoided (step S37), and if it is not detected that the collision is avoided, the airbag module 3 is maintained at the second position P2 (step S38). A collision is determined (step S39).

  When the ECU 21 detects a vehicle collision, the ECU 21 determines whether the airbag 15 can be deployed (step S40). In the present example, since the airbag module 3 is disposed at the second position P2 where the airbag 15 can be deployed in steps S36 and S38, the airbag 15 is deployed after the determination is possible (step S41). ).

  The configurations of the various vehicle seat devices described above are exemplifications, and appropriate modifications and changes can be made without departing from the scope of the present invention.

  For example, in the example shown in FIG. 1, the airbag module 3 is moved forwardly of the first position P1 along the side portion of the seat body 2 and the front surface of the seat back 11 by the rotational movement of the movable portion 4 around the rotation shaft 13. In the example shown in FIG. 15, the movable portion 4 can be translated in the front-rear direction of the seat back 11, and the movable portion 4 is translated in the front-rear direction. The airbag module 3 is configured to be moved between the first position P1 and the second position P2 by the movement. The position of the second position P2, that is, the distance from the seat cushion 10 and the distance from the seat back 11 can be adjusted by the translational movement of the movable part 4 in the vertical direction and the longitudinal direction of the seat back 11.

  Further, in the example shown in FIG. 1, a plurality of movable parts 4 are provided for each airbag module 3, but in the example shown in FIG. 16, the movable part 4 is configured by a single member, and the movable part 4 4 and the structure of the drive part 30 (refer FIG. 4 etc.) which moves the movable part 4 are simplified. The movable part 4 may be provided for each pair of airbag modules 3.

  Further, in the example shown in FIG. 1, the airbag module 3 and the movable portion 4 that supports the airbag module 3 are both provided on the side portion of the seat back 11. For example, the waist portion of the occupant H is restrained. The airbag module 3 for deploying the airbag 15 and the movable portion 4 that supports the airbag module 3 can also be provided on the side portion of the seat cushion 10 as shown in FIG. In this case, the airbag module 3 is moved between the first position P <b> 1 and the second position P <b> 2 by the translational movement of the movable portion 4 in the vertical direction of the seat back 11, and in the vertical direction and the front-back direction of the seat back 11. The second position P2 of the airbag module 3 is adjusted by the translational movement of the movable part 4. Further, the airbag module 3 for restraining both shoulder portions of the occupant H can also be provided on the side portion of the headrest 12, as shown in FIG.

  As described above, the vehicle seat device disclosed in the present specification includes a seat body having a seat cushion and a seat back, and at least a pair of air provided on the left and right sides of the seat body in a left-right pair. A bag module; and a movable part that supports the airbag module and is movable with respect to the seat body. The airbag module moves along the side part of the seat body by the movement of the movable part. The airbag that is moved between the first position and the second position in front of the front surface of the seat back and that is deployed from the airbag module in the second position allows the occupant seated on the seat body to be seated on the seat. Put between the back.

  Further, in the vehicle seat device disclosed in the present specification, the movable portion has the second position at least one of a distance from the seat cushion at the second position and a distance from the seat back at the second position. Can be adjusted relative to the seat body.

  Further, the vehicle seat device disclosed in the present specification sets the second position based on a drive unit that moves the movable unit and physique information corresponding to the physique of an occupant seated on the seat body, And a control unit that controls the drive unit so that the airbag module is disposed at the set second position.

  In addition, the vehicle seat device disclosed in the present specification is configured to allow the occupant to sit on the seat body based on a drive unit that moves the movable part and seating information according to the seating situation of the occupant in the seat body. And a control unit that controls the driving unit so that the airbag module is disposed at the second position when the seating is detected and an occupant is seated on the seat body.

  Further, in the vehicle seat device disclosed in the present specification, the airbag module is disposed at the second position when a collision of a vehicle is predicted by a driving unit that moves the movable unit and a collision prediction system. A vehicle seat device further comprising: a control unit that controls the drive unit.

DESCRIPTION OF SYMBOLS 1 Vehicle seat apparatus 2 Seat main body 3 Airbag module 4 Movable part 10 Seat cushion 11 Seat back 15 Airbag P1 1st position P2 2nd position

Claims (5)

A seat body having a seat cushion and a seat back;
At least a pair of airbag modules provided in a left-right pair on the left and right sides of the seat body;
A movable part that supports the airbag module and is movable relative to the seat body;
With
The airbag module is moved between a first position along a side portion of the seat body and a second position ahead of the front surface of the seat back by the movement of the movable portion,
The airbag developed from the airbag module in the second position is a vehicle seat device that sandwiches an occupant seated in the seat body with the seat back. The vehicle seat device according to claim 1,
The movable portion is movable with respect to the seat body so that the second position can be adjusted at least one of a distance from the seat cushion of the second position and a distance from the seat back of the second position. A vehicle seat device. The vehicle seat device according to claim 2,
A drive unit for moving the movable unit;
A control unit that sets the second position based on physique information corresponding to the physique of an occupant seated on the seat body and controls the drive unit so that the airbag module is disposed at the set second position. When,
A vehicle seat device further comprising: The vehicle seat device according to any one of claims 1 to 3,
A drive unit for moving the movable unit;
When the seating of the occupant on the seat body is detected based on the seating information corresponding to the seating situation of the occupant in the seat body, and the seating of the occupant on the seat body is detected, the airbag module A control unit for controlling the driving unit to be disposed at a position;
A vehicle seat device further comprising: The vehicle seat device according to any one of claims 1 to 3,
A drive unit for moving the movable unit;
A control unit that controls the drive unit so that the airbag module is disposed at the second position when a collision of the vehicle is predicted by the collision prediction system;
A vehicle seat device further comprising:

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